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CVE-2026-45839
high
CVSS 7.8
Vulnerability in c (CVE-2026-45839)
Summary
vulnerability in c (CVE-2026-45839). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-45839** has been found in c.
Successful exploitation can lead to full system takeover. CVSS score: 7.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "c CVE-2026-45839" on the vendor's site.
CVE-2026-45839 (c) — CWE-129 / CVSS v3 7.8
Attack vector: local / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
❓ What is the problem
**A vulnerability** (CWE-129) exists in c.
📍 Affected scope
c — .
🔥 Severity
Severity: High (CVSS 7.8/10). Successful exploitation can lead to full system takeover
🔧 How to fix
Update to the patched release per vendor advisory.
🛡️ Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'c' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'c' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で `c` を grep し、稼働しているサービス・バージョンを把握する。
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7Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番では Step 3 と同じログクエリでアラート再発が無いか継続監視。
References
- web https://git.kernel.org/stable/c/1c22483a2c4bbf747787f328392ca3e68619c4dc
- web https://git.kernel.org/stable/c/36a9012f76ba8d9189ae56a1f8bb7c87c07a1f3a
- web https://git.kernel.org/stable/c/3ff85ae79e1a74baeb916b78a63d821f6d19a994
- web https://git.kernel.org/stable/c/76f2ebaf79a9ae6d0737b87f045fe769e425d78f
- web https://git.kernel.org/stable/c/99dbab7b5a12d8f58d5b0aa2f7a1fe656a70f4b2
- web https://nvd.nist.gov/vuln/detail/CVE-2026-45839
- web https://github.com/advisories/GHSA-hj8v-m57h-q9mq
- web https://git.kernel.org/stable/c/669349b4612c26b3d7aacfa99d7174681bd19223
- web https://git.kernel.org/stable/c/a9e777f856cd2f1efc106afc7bf21aef868509d5
- web https://git.kernel.org/stable/c/c8e49b79c4b48bd687706ff6e9c82638dc81ef80